of wolverhampton



L. COATALEN. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR. 20. I917- Patented June 24,1919.

1% Atty? lVolverhampt-on,

' NITED' sTATEs PATENT OFFICE.

LOUIS COATALEN,

BEAM Moron T all whom it may concern:

Be it known that I, LOUIS CoA'rALEx, a subject of the King of England,residing at Stafl'ordshire,= England, have invented certain new anduseful -"Improvements 1n tion.

for its object to provide simple and im proved means for cooling thecrank chamber, warming, the carbureters and the air which is carbureted,and for supplying the carbureter with air at the required pressure. Inmany cases the engine is so shut in by the fuselage of an aeroplane orthe gondola of an airship that the crank chamber is not exposed to anatural draft and the oil becomes very highly heated.

This is obviated by the present invention by forming the crank case witha false bottom or casing, and by drawing the air for the engine through.the space so provided. The outer wall may be more or less permanentlyattached to or. formed with the bottom half of the crank chamber, and inany case it is preferred that it be extended so far up as to inclose thecarbureters. The casing may be supplied with air under pressure obtainedin any suitable manner and by I means of supplementary air inletswhereby air at atmospheriopressure is obtained the pressure of the airentering the carbureter may be adjusted To increase the cooling effectthere maybe an air current or flow of air through the casing in excessof that re-- quired for the carbureter. That is to say, some of the airentering the casing may flow out again. a

' In the accompanying drawings,

Figure 1 is a side elevation showing one method of carrying out thisinvention, and

Fig. 2 is an end View of the same. Like letters indicate like partsthroughout the drawings.

The en e illustrated comprises a pairofcylinder locks A set at a smallangle upon a crank chamber B the outline of which is shown in dottedlines. The crank chamber is inclosed in a casing C which forms a jacketand is provided with an aperture-D and it preferably projects in thedirection of motion, which may also lie close to the tip' 0F WOLVERHAMDTON, ENGLAND, ASSIGNOB 0F ONE-BLADE TO SUN CAR COMPANY LIMITED, 015WOLVERHAMPTON,.E1IGLAN D.

Specification of Letters Patent.

Internal-Combustion En-. gines,,of which the following is a specifica-INTERNAL-COMBUSTION ENGINE.

Patented June 24, 1919.

Application filed March'20, 1917. Serial No. 156,140.

of-the propeller so that by the slip of the .propeller air is forcedlnto the casing C This casing is closed at the top except for aperturesat E which communicate with compartments F built around the canburetersG which communicate with the engine by means of the induction pipes H.

Preferably the carbureters' are completely inclosed so thatthe only airpassing to the inlet pipes H is that which enters at D and travels overthe surface of the crank case, cooling this and warming the air. Byarranging the inlet D at the front the air is supplied under slightpressure due -to the motion of the engine through the air, or to theslip of the propeller, and this is important in the case of anengineworking at high altitudes as by this means the weight of air takenin remains more constant. The inlet D maybe gauze covered to excludedust, and has a throttle D to shut off the air entering, partially orwholly. There are separate air inlets D which are not exposed to theforced draft and by using these instead of the inlet D the air may besupplied at atmospheric pressure,-and obviously by opening both inletsair under slight pressure may be used so that simple means may beprovided for obtaining air at approximately the correct weight to suitthe altitude at which'the engine is operating.

Any suitable arrangement of bafiles may be employed to cause the air topass along the whole length of the crank case, and doors mlay be fittedto render the carbureters accessi le.

Preferably the inlet D or inlets are at the lowest possible points andoil or fuel drop? ping from the engine may drop out through v theseapertures and the actual apertures may "be fitted with gauzes whichexclude dust and of air, through the bustion engine having posed to asuction air forced into-the casing passes out idly andthere isconsequently a more rapid 'flow casing than would occur if all the airentered the carbureters.

at I claim to secure by Letters Patent is 1. In combination with aninternal coma-crank case at the lower part thereof, a carbureter, acasing inclosing the crankcase and the carbureter,

' said casing depending "below the crank casing and having an air inletdinally and forwardly to receive air as the.

' zontally and forwardly to receive air as the.

directed longituengine moves forward, substantially as de scribed;

2. In combination with an internal com-Q bustion engine having a crankcase at the lower part thereof, a carbureter, a casing inclosing thecrank case and the carbureter, said casing depending below the crankcasg and havlllg an air inlet directed; horiengme moves forward, saidcasing at a point above the air-inlet havlng'an opening to theatmosphere withadevice for regulating the size thereof, substantlally asdescribed.

a pair of cylinder arranged in a plane cen- 3. In combination withblocks, a crank case p trally between them and common thereto, a casinghaving side Walls spaced apart from the "crank casing and inclosing thesame and depending below the crankcase with a forefiect so that some ofthe as my invention-and desire internal combustion engine, comprising acrank chamber, ing inclosing them and having an opening through whichair is positively forcedvand means for adjusting the pressure of saidair, consisting of openingsthrough' the casing to the atmosphere and adevice for varying the size of said opening.

5. An internal combustion engine, comprising a crank chamber, a casingsurrounding said crank chamber having an opening through which air ispositively forced, carbureters, casings inclosing and communicating withsaid. first mentioned casing'and means for adjusting the pressure of theair, consisting of openings through the casing to the atmosphere and adevice for vary-ingthe size of said opening. In testimony whereofI'hm'esigned my name to this specification two subscribing witnesses. I:LOUIS COATALEN. ."Witnesses: Y v i J oHN" MARSTON, W. SEIFL' acarbureter, a ca'ssaid carbureters I in the presence of

